/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package controller;

import dao.MemberDao;
import entities.Member;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author lion
 */
public class LoginServlet extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException, Exception {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            String taikhoan = request.getParameter("txtUsername");
            String matkhau = request.getParameter("txtPassword");

            MemberDao memberDao = new MemberDao();
            Member member = new Member();
            member.setUsername(taikhoan);
            member.setPassword(matkhau);

            if (memberDao.isBlock(member)) {
                response.sendRedirect("block.jsp");
            } else if (memberDao.login(member) == true) {
                HttpSession session = request.getSession(true);
                session.setAttribute("User", member.getUsername());
                if (memberDao.isAdmin(member)) {
                    response.sendRedirect("user/admin/adminPage.jsp");
                } else if (memberDao.isFaculty(member)) {
                    response.sendRedirect("user/faculty/facultyPage.jsp");
                } else if (memberDao.isStudent(member)) {
                    response.sendRedirect("user/student/studentPage.jsp");
                }
            } else {
                response.sendRedirect("failed.jsp");
            }

        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        try {
            processRequest(request, response);
        } catch (Exception ex) {
            Logger.getLogger(LoginServlet.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        try {
            processRequest(request, response);
        } catch (Exception ex) {
            Logger.getLogger(LoginServlet.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
